This is the cap that uses evaporation to keep your head up to 20º F cooler than outside air temperature. Only available from Hammacher Schlemmer, this is the only cap that cools the crown and provides cooling in the brim. Made by a supplier of cooling apparel to professional cycling teams, Olympic athletes, and the military, the hat is charged by submerging in cold water for at least two minutes, then wringing out the excess. The cap’s patented fabric inner liner retains the cool water where it vaporizes over five hours, the evaporation process naturally drawing heat away from your head, keeping you cool. 100% cotton with 53% polymer/47% cellulose liner. One size fits most; adjustable hook-and-loop back. Hand wash, air dry. Imported. Khaki. 4 1/2" H x 7" W x 10" D. (4 oz.)

Reviews

Reviews

Lifetime Guarantee

The Evaporative Cooling Cap comes with The Hammacher Schlemmer Lifetime Guarantee at no additional charge. If this product ever disappoints you, for any reason, you may return your Hammacher Schlemmer purchase for exchange, credit, or refund.

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There have been many "cooling" wear products hit the market this year. Cooling towels, cooling hats, etc... I have tried several as instructed and felt marginal benefits. However, I believe the effectiveness of the products will vary depending on where you live. I live in the central Florida area, and May through October the temps and the humidity go through the roof. All of these products depend on evaporation to maximize the cooling effects. However, in extremely humid environments like Florida in the summer the humidity is often 80-90%. With so much humidity, evaporation is minimal. Therefore the cooling effect is greatly diminished. I have been using the hat to help keep me cool when working in the yard. If you keep the hat soaked with cold water and repeat every hour it does help keep you cool. The sunblock, protection and durability are all top notch. I'm sure the product would work much better in the cooler and less humid months when the evaporation effect will be much easier to achieve. The product does work and I am sure will work much better in dryer climates. In very humid environments it only helps take the edge off, but every little bit helps.

This product was a great addition to my Husband's hat collection. Perfect for the very hot days when outdoor work is required. Best defense for heat stroke on the hottest days and I would recommend this product for that reason. Only negative is that it is a little bulky.

husband works outside year round.Florida is hot and humid.electrolites don't always work in this type weather. He has passed out and gotten sick enough had to be taken to hospital. This hat is a life saver.I'm ordering 3 more.Have used the towels you can order and does same thing but the hat doesn't Fall off. Hat is not just cool but cold and last about 2 1/2 hours.This is the real deal!!!!

Bought this cap to play pickleball in the hot day sun- really cools off your head for a game- after a game needs to be resoaked to refresh the cooling crystals. Should be great to play golf- just bring along a bottle of water to refresh when needed. Wish it came in a dark color like a black or navy. Can be worn by male or female.

I bought this cap for my husband for his birthday. We went to St Thomas for a week and he wore this hat every day we were there. He never felt hot -the cooling mechanism truly works. I would be feeling discomfort from the heat and he would say he was cool as a cucumber! I wish it didn't cost [$] including shipping, but he sure likes it and should get plenty of use out of it!